Insider plans sale of 1,034 common shares

An affiliate of PTCT has filed a Form 144 notice to potentially sell 1,034 shares of common stock through Fidelity Brokerage Services on 01/08/2026, with an aggregate market value of $79,048.37.

Rhea-AI Filing Summary

An affiliate of PTCT has filed a Form 144 notice to potentially sell 1,034 shares of common stock through Fidelity Brokerage Services on 01/08/2026, with an aggregate market value of $79,048.37. The filing notes that 80,288,305 shares of common stock were outstanding and that the shares to be sold arose from restricted stock vesting on 01/07/2026 as compensation from the issuer.

Over the prior three months, the same seller, Christine Utter, reported selling 1,381 shares of common stock for gross proceeds of $106,264.64 on 01/06/2026 and 1,235 shares for $95,692.49 on 01/07/2026. By signing, the seller represents they are not aware of undisclosed material adverse information about the issuer’s operations.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the PTCT Form 144 filing disclose?

The Form 144 discloses a planned sale of 1,034 shares of PTCT common stock, to be sold through Fidelity Brokerage Services LLC on 01/08/2026 with an aggregate market value of $79,048.37.

Who is selling PTCT shares in this Form 144?

The seller listed is Christine Utter, who is the person for whose account the 1,034 shares of PTCT common stock are to be sold under this Form 144 notice.

How were the PTCT shares in this Form 144 acquired?

The 1,034 shares were acquired on 01/07/2026 through restricted stock vesting from the issuer as compensation, with payment also dated 01/07/2026.

What prior PTCT stock sales has the filer made recently?

During the past three months, Christine Utter sold 1,381 shares of PTCT common stock on 01/06/2026 for $106,264.64 and 1,235 shares on 01/07/2026 for $95,692.49 in gross proceeds.

How many PTCT shares were outstanding when this Form 144 was filed?

The Form 144 states that 80,288,305 shares of PTCT common stock were outstanding at the time of the notice.

What representation does the seller make in the PTCT Form 144?

The seller represents that they do not know any material adverse information about the issuer’s current or prospective operations that has not been publicly disclosed, and acknowledges that intentional misstatements or omissions are Federal criminal violations.

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Accepted by SEC EDGAR 01/08/2026 - 04:22 PM EST Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001707685
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	PTC THERAPEUTICS, INC.
SEC File Number	001-35969
Address of Issuer	500 WARREN CORPORATE CENTER DRIVE WARREN NEW JERSEY 07059
Phone	9082227000
Name of Person for Whose Account the Securities are To Be Sold	Utter Christine Marie
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	1034	79048.37	80288305	01/08/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	01/07/2026	Restricted Stock Vesting	Issuer			1034	01/07/2026	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Christine Utter 500 Warren Corporate Center Drive Warren NJ 07059	Common	01/06/2026	1381	106264.64
Christine Utter 500 Warren Corporate Center Drive Warren NJ 07059	Common	01/07/2026	1235	95692.49

144: Remarks and Signature

Remarks	Sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution.
Date of Notice	01/08/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Adam Gehring, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Christine Utter
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)